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T. A. KILLMAN 8v E. A. BRATTEN. COMPUTING SCALE.

(No Model.) 2 Sheets-Sheet 2. T. A. KLLMAN H. A. BRATTEN. OMPUTNG SCALE Tamas Pat exited May 2 Illllllllllllllll i. -Ean mm ommmo wAsHmmoN. u. c

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THOMAS A. KILLMAN AND IIERSCIAIEL A. BRATTEN, OF LIBERTY, TENNES- SEE, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE AMERICAN COMPUT- ING SCALE COMPANY, OE YORK, N. Y.

COMPUTlNG-'SCALE SPECIFICATION forming part'of Letters Patent No. 604,535, dated 'May 24, 1898. Application iiled June 9, 1897. Serial No. 640,019. (No model.)

To @ZZ whom it may concern:

Be it known that we, THOMAS A. KILLMAN and HERscHnL A. BRATTEN, citizensof the United States, residing at Liberty, in the county of De Kalb and State of Tennessee,

have invented a new and useful Computing- Scale, of which the followingis a specification. The invention relates to improvements in computing-scales. ro The object of the present invention is to improve the construction of computing-scales and to provide a simple and comparatively inexpensive one adapted to indicate the weight and price of an article and capable of ready i 5 adjustment to set it to correspond to the price per pound of thev merchandise to be weighed.'

The invention consists in the construction and novel combination and arrangement of parts, as hereinafter fully described, illuszo trated in the accompanying drawingsf' and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a computing-scale constructed in accordance with this invention. Fig. 2 is an z 5 enlarged detail perspective view of the front portion of the beam of the scale, illustrating the manner of mounting the outer end of the adjusting-bar on the graduated arm of the scale-beam. Figs. Sand lare detail views 3o illustrating the manner of connecting the rack-bar to the adj usting-bar. Fig. 5 is a vertical sectional view of the poise of the lower bar of the scale-beam, the section being taken longitudinally thereof. Fig. 6 is a similar 3 5 view taken transversely of the poise. Fig. 7 is a detail sectional view of the outer arm of the scale-beam. Fig. 8 is a detail view showing the dial and hands of the indicating device. Y 4o Like numerals of reference designate corresponding parts in the several figures of the drawings.

1 designates a base supporting a platform 2 and having standards 3 and 4 rising from the back of it. The standard 3 is hollow, and a scale-beam 5 is connected with the platform 2 by a link 6 in the usual manner. The scalebeam, which is tulcrumed on a support or bearing 7, is provided with upper and lower bars S and 9, having graduations and con- 5o nected by front and rear arms 10 and 11.

` The poise 12, which is slidingly mounted on thelower bar of the scale-beam, carries a vertically-movable rack-bar 13, which is connected at its upper end with an adjustable bar 14, arranged at an angle to the lower bar of the scale-beam and adapted to cause the rack-bar to move upward as the poise slides from left to right on the scale-beam, and it will be apparent that the greater the angle 6o formed by the adjustable bar and the scalebeam the greater will be the upward movement of the rack-bar as the poise slides outward.

The poise 12 is provided at its top with a 65 vertical post 15, having a vertical slot 16 to receive the adjustable bar 14 and provide it at the inner faces of its sides with vertical grooves 17, which are engaged bythe ends of a horizontal pin 19. The upper end of the 7o rack-bar 13 is bifurcated to receive the adj ustable bar 14, and the pin 19, which pivots the rack-bar to the adjustable bar, slides in a slot 2O of the latter, whereby the rack-bar will be drawn upward as the poise slides outward.

The lower bar of the scale-beam passes through an opening of the poise 12, and the latter is provided with upper and lower rollers 21 and 22, which enable the said poise 12 8o to slide frictionlessly on the scale-beam. The lower pulleys 22 are j ournaled in bifurcations of rods 23 and are forced against the lower edge of the scale-beam by springs 24, which exert sutticient pressure to prevent the poise 8 5 from sliding accidentally. The springs 24, which are disposed on the rods 23, are engaged by sleeves 25, having the upper portions of their bores or openings smooth to receive the rods, and the lower portions of the 9o openings or bores are threaded and engaged by adjusting screws 2G. The adj ustingscrews are mounted on the poise at the bottom thereof and have eXteriorly-arranged heads which permit the tension of the springs to be readily regulated.

The rack-bar meshes with a pinion 27 of a shaft 28, which carries a hand 29, and the said pinion Z7 also meshes with a gear-wheel 50, connected with a pinion 3l and mounted on a shaft 32. The pinion 3l meshes with a gearwheel 3.3, which is mounted on the shaft 28 and which is connected with a hand Si, and the diameters ot the gears are such that when the hand 2l) makes one revolution the4 other hand will make ten, or, in other words, one hand moves one-tenth as fast as the other. The hands are arranged on a dial 35, which is provided with two separate series of grad uations, as shown. The outer graduations are divided oft into hundreds and represent cents, and the inner circle of graduations is divided ol'l' intoten equal parts and represents dollars, so that the indicating mechanism records or registers dollars and cents.

The arm lO at the outer end of the sealebeam is provided with a longitudinal slot to receive the outer portion of the adjustable bar 1st, and it has a transverse slot or opening 3G, through which extends the shank of a pointer 37. The transverse opening 36 divides the arm into two portions 3S and 39, and pointer 37 extends from each side of the opening 3G and registers with each of the scales or series of graduations of the arm lO, and by adjusting the bar l-ion the said arm the indicating mechanism of the poise l2 corresponds to the position of the pointer 37 and indicates the correct price, while the poise l2 indicates the weight. The graduations 30 at the outer side of the opening 30 are price-per pound graduations, and these at the inner side of the opening are arranged to correspond with the priee-per-pound graduations and indicate the number of pounds a dollar will buy at any price per pound on the scale 39. The scale-beam is graduated to weigh one hundred pounds and computes to that amount, but is adapted to weigh in the ordinary manner any amount by means of additional weights. The outer side 3) of the arm 10 is divided oft into ten parts, representing from one cent to ten cents, but the range of the scale may be readily increased. If the article to be weighed costs forty cents per pound, the adjustable bar is arranged at si. on the scale 39 and a 0 is allixed to the result shown by the indicator, which operation is equivalent to multiplying the result by ten.

The outer end of the adjustable bar is bifurcated to form spring-arms 40, which are provided with teeth 4l and which are adapted to interlock with corresponding teeth ll-Z of the walls of the longitudinal slot 43 oi' the arm lO. The inner end ol the adjustable bar 14: is pivotally mounted on the scale-beam at a point above the inner end of the lower bar l).

It will be seen that the computing-scale is exceedingly simple and inexpensive in construction, that the operating mechanism for indicating the price is positive and reliable, and it cannot readily become broken or other wise get out of order.

Changes in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrifie ing any of the advantages el this invention.

Vhat we claim isl. In a computing-scale, the combination of a scale-beam, an adj us :able bar arranged at an angle to the same, a sliding poise mounted on the scale-beam, a rack-bar mounted on the poise and connected with the adjustable bar, an indicator geared with and operated by the raclebar, upper rollers journaled on the poise and resting upon the upper edge ol the scale-beam, the lower rollers 22, engaging the lower edge of the scale-beam, screws mounted on the poise, sleeves adj ustably connected with the screws, rods arranged inthe sleeves and carrying the lower rollers, and springs interposed between the sleeves and the lower rollers, substantially as d scribed.

i?. In a computing-scale, the combination of a scale-beam, a sliding poise mounted on the same, and upper and lower rollers carried by the poise and bearing against the upper and lower edges of the scale-beam, one set ol' rollers being spring-actuated and yieldingly engaging the beam, substantially as and for the purpose described.

In a computing-scale, the combination of a scale-beam, a sliding poise mounted on the same and provided at its top with a vertical post having a longitudinal slot, an adjustable bar disposed longitudinally el the scale-beam, arranged within the slot ol' the post and adapted to be moved to and from the beam to vary the angle between the same, a vertically-movable racl;-bar mounted on the poise, extending into the post and connected with the adjustable bar and adapted to be actuated by the same when 'the poise slides along the scale-beam, and an indicating mechanism mounted on the poise and geared with and actuated by the rack-bal', substantially as described.

4t. In a computing-scale, the combination of a scale -beam, a sliding` poise mounted thereon, an adjustable bar arranged at an angle to the scale-beam and adapted to be moved to and from the same to vary the angle, registering mechanism mounted on the poise and operated by the adjustable bar, an arm ex tending upward from the trent or outer end of the seale-beam, arranged in the path ot' the adjustable bar and being rigid with the said scale-beam, said arm being provided with graduations, and means for securing the adjustable bar at any point on the arm, sub stantially as described.

5. In a computing-scale, the combination of a scale-beam provided with graduations, an arm rigid with the sealebeam and ex.- tending upward from the outer or lront end thereof, said arm being provided with a longitudinal slot 3G, and having graduations at opposite sides of the same, an adjustable bar arranged at an angle to the scalebeam and adapted to be moved to and from the same to vary the angle thereof, said adjustable bar IOO having` its outer end arranged at and moving In testimony that We claim the foregoing along said arm, a pointer carried by the adas our own We have hereto afXed our signa- 1o j ustable bar, operating in the slot 3G and eX- tures in the presence of two Witnesses.

tendingfrom the same in opposite directions, THOMAS A. KILLMAN.

a sliding poise mounted on the beam, and a HERSGHEL A. BRATTEN. registering mechanism carried by the poise Vitnesses:

and actuated by the adjustable bar, substan- LENORA MARTIN,

tiaily as described. H. M. EVANS. 

